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发明名称
Building block
摘要
申请公布号
US2315194(A)
申请公布日期
1943.03.30
申请号
US19400316391
申请日期
1940.01.30
申请人
IRA FOREMAN
发明人
FOREMAN IRA
分类号
E04B2/44
主分类号
E04B2/44
代理机构
代理人
主权项
地址
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